Influence of alkaline peroxide assisted and hydrothermal pretreatment on biodegradability and bio-hydrogen formation from citrus peel waste

Autor(es)

Camargo, Franciele Pereira ^[1] ; Salzamoto, Isabel Kimiko ^[1] ; Silveira Duarte, Iolanda Cristina ^[2] ; Amancio Varesche, Maria Bernadete ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Engn Sao Carlos, Dept Hydraul & Sanitat, Ave Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP - Brazil

^[2] Fed Univ Sao Carlos UFSCar, Dept Biol, Joao Leme dos Santos Highway, Km 101, BR-18052780 Sorocaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 44, n. 41, p. 22888-22903, AUG 30 2019.
• Citações Web of Science: 0

Resumo

The effect of pretreatments by hydrothermolysis (180 degrees C; 15 min) and alkaline delignification (NaOH 5M; H2O2 1%; 24 h) in citrus peel waste (CPW) was evaluated, as well as the effect on H-2, organic acids and alcohols production, in addition to characterization of the microbial community involved in fermentation. Batch reactors at 37 degrees C were operated with 3 gTVS/L of CPW with allochthonous consortium (UASB reactor sludge; 2 gTVS/L) and autochthonous of CPW (1.5 gTVS/L) as inocula. H-2 production was higher in reactors with in natura CPW (13.31 mmol/L) compared to hydrothermolysis (8.19 mmol/L) and alkaline delignification (7.27 mmol/L). The acetogenic pathway was predominant in the in natura CPW (4,355 mg/L acetic acid). The most abundant genera in the in natura CPW and after hydrothermolysis were Clostridium (18.97 and 12.90%, respectively) and Ruminiclostridium (16.65 and 1.04%, respectively) commonly related to cellulolytic bacteria and/or H-2 production. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 17/01722-0 - Obtenção de biogás e outros compostos de interesse biotecnológico a partir de resíduos do processamento de citros/laranja
• Beneficiário: Franciele Pereira Camargo
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 15/06246-7 - Aplicação do conceito de biorrefinaria a estações de tratamento biológico de águas residuárias: o controle da poluição ambiental aliado à recuperação de matéria e energia
• Beneficiário: Marcelo Zaiat
• Modalidade de apoio: Auxílio à Pesquisa - Temático